Eur. Phys. J. B 13, 685-694 (2000)
https://doi.org/10.1007/s100510050086

Superconductor order parameter symmetry in UPd₂Al₃

DRFMC-LCP, Centre d'Études Nucléaires, CEA Grenoble, 38054 Grenoble Cedex 9, France

Received: 16 July 1999
Published online: 15 February 2000

Abstract

The heavy fermion compound UPd₂Al₃ has attracted much interest on account of the coexistence of antiferromagnetism and superconductivity at temperatures below 2 K. The antiferromagnetic fluctuations provide, principally via inelastic neutron scattering, a window on the low frequency dynamics in this material. By an analysis of neutron scattering data, and taking into consideration results from other experimental probes, it is suggested which sheet(s) of the f-electron Fermi surface may play an active role in forming the superconducting state in UPd₂Al₃. The proposed scheme sheds new light on previously reported anomalies in this material.